On-Site Blackwater Treatment Fosters Microbial Groups and Functions to Efficiently and Robustly Recover Carbon and Nutrients

Autor(es)

Kuramae, Eiko E. ^{[1, 2]} ; Dimitrov, Mauricio R. ^[1] ; da Silva, Gustavo H. R. ^[3] ; Lucheta, Adriano R. ^[1] ; Mendes, Lucas W. ^[1] ; Luz, Ronildson L. ^[1] ; Vet, Louise E. M. ^[4] ; Fernandes, Tania V. ^[5]

Afiliação do(s) autor(es)

^[1] Netherlands Inst Ecol NIOO KNAW, Dept Microbial Ecol, Droevendaalsesteeg 10, NL-6708 PB Wageningen - Netherlands

^[2] Univ Utrecht, Inst Environm Biol, Ecol & Biodivers, Padualaan 8, NL-3584 CH Utrecht - Netherlands

^[3] Sao Paulo State Univ UNESP, Dept Environm & Civil Engn, BR-17033360 Bauru, SP - Brazil

^[4] Netherlands Inst Ecol NIOO KNAW, Dept Terr Ecol, Droevendaalsesteeg 10, NL-6708 PB Wageningen - Netherlands

^[5] Netherlands Inst Ecol NIOO KNAW, Dept Aquat Ecol, Droevendaalsesteeg 10, NL-6708 PB Wageningen - Netherlands

• Tipo de documento: Artigo Científico
• Fonte: MICROORGANISMS; v. 9, n. 1 JAN 2021.
• Citações Web of Science: 0

Resumo

Wastewater is considered a renewable resource water and energy. An advantage of decentralized sanitation systems is the separation of the blackwater (BW) stream, contaminated with human pathogens, from the remaining household water. However, the composition and functions of the microbial community in BW are not known. In this study, we used shotgun metagenomics to assess the dynamics of microbial community structure and function throughout a new BW anaerobic digestion system installed at The Netherlands Institute of Ecology. Samples from the influent (BW), primary effluent (anaerobic digested BW), sludge and final effluent of the pilot upflow anaerobic sludge blanket (UASB) reactor and microalgae pilot tubular photobioreactor (PBR) were analyzed. Our results showed a decrease in microbial richness and diversity followed by a decrease in functional complexity and co-occurrence along the different modules of the bioreactor. The microbial diversity and function decrease were reflected both changes in substrate composition and wash conditions. Our wastewater treatment system also decreased microbial functions related to pathogenesis. In summary, the new sanitation system studied here fosters microbial groups and functions that allow the system to efficiently and robustly recover carbon and nutrients while reducing pathogenic groups, ultimately generating a final effluent safe for discharge and reuse. (AU)

• Processo FAPESP: 13/50351-4 - Recovering nutrients and carbon from concentrated black water: a sustainable decentralized approach for wastewater treatment
• Beneficiário: Luiz Antonio Daniel
• Modalidade de apoio: Auxílio à Pesquisa - Regular